It is a common belief that people swallow about eight spiders a year. There is, however, no evidence for this myth. It is highly unlikely a spider would approach a sleeping person, and more unlikely that the eight-legged arthropod would enter an open mouth. The vibrations caused by breathing, moving and snoring during sleep repel spiders. Hence, it is highly unlikely the average person swallows even a single spider while sleeping. The chances are even lower for those who sleep with their mouths closed.
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